Cashier (still in French): “If you give me this, you’ll have to spend all of it! I cannot give you the missing 5 euros, that’s our policy!”

Customer (still in English): “I know this coupon is valid. Please, I’d just like to pay!”

(At this point, I’m wondering who’s stupider: the manager who hired someone who doesn’t know English in our city, or the tourist who didn’t even learn how to say “please, do you speak English?” in French before coming.)

Me (awkwardly, in English): “Madam, he’s telling you that if you pay with this card, he won’t be able to give you the missing money back.”